Question on Cam positions on cockpits

www.positive-simracing.com

A driver who uses a three-screen cockpit have asked me if it its allowed to change the FOV in the .cam files, in order to adopt a real vision to his cockpit. He can't adjust the FOV with the limited range given in the settings menu of rfactor.

Other question related to the use of a set of big screens is if it is allowed the reduction of vibration in cockpit.info.

Particularly those drivers who use big (professional?) cockpits: How do you deal with these issues?